3.1.1 Photograph Module¶
In this kit, equipped with a camera module, let’s try to take a picture with Raspberry Pi.
For more information on how to connect the camera module and its configuration, please refer to Camera Module.
Step 1: Go into the Raspberry Pi Desktop. You may need a screen for a better experience, refer to: Connect your Raspberry Pi. Or access the Raspberry Pi desktop remotely, for a detailed tutorial please refer to Remote Desktop.
Step 2: Open a Terminal and get into the folder of the code.
Step 3: Run.
sudo python3 3.1.1_PhotographModule.py
After the code runs, the camera will take a photo. Now you can see the photo named
my_photo.jpg in the
You can also open
3.1.1_PhotographModule.py in the
/home/pi/raphael-kit/python/ path with a Python IDE, click Run button to run, and stop the code with Stop button.
If you want to download the photo to your PC, please refer to Filezilla Software.
from picamera import PiCamera camera = PiCamera() def setup(): camera.start_preview(alpha=200) def main(): camera.capture('/home/pi/my_photo.jpg') while True: pass def destroy(): camera.stop_preview() if __name__ == '__main__': setup() try: main() except KeyboardInterrupt: destroy()
from picamera import PiCamera camera = PiCamera()
picamera library and instantiate the
PiCamera class to use the camera module.
Show the preview overlay and change the transparency level of the preview with
alpha - from 0 to 255. This method starts a camera preview as an overlay on the Pi’s primary display (HDMI or composite). By default, the renderer will be opaque and fullscreen.
This means the default preview overrides whatever is currently visible on the display. More specifically, the preview does not rely on a graphical environment like X-Windows (it can run quite happily from a TTY console); it is simply an overlay on the Pi’s video output. To stop the preview and reveal the display again, call
stop_preview() . The preview can be started and stopped multiple times during the lifetime of the
Capture an image from the camera, storing it in
You can use
camera.capture() function and
for loop together to achieve continuous shooting. And use the
delay function to adjust the time interval for taking pictures.
for i in 5: camera.capture('/home/pi/my_photo%s.jpg' % i)